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Journal Articles Journal of Inorganic and Organometallic Polymers and Materials Year : 2020

Silver modified SBA-15 for Iodine entrapment

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Abstract

A green solvent-free approach was used to produce grey coloured Ag/AgNO3 functionalised SBA-15. This easy to handle powder was then used to extract molecular Iodine from cyclohexane by simple addition and filtration. The resulting yellow powder was examined by UV-Vis, FT-IR, XRD, TGA and SEM/TEM. It was found that nanosized AgI particles were now present on/in the porous silica support. Despite numerous washing steps with a range of solvents (ranging from cyclohexane to water) no leeching was observed. The sorbent proved highly efficient extracting 0.46 moles of I2 for every mole of silver, almost 1:1 Ag:I. Finally, TGA demonstrated an increased melting point for AgI indicating a degree of protection from the silica support. This is important when considering transformation into the final waste form.
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Dates and versions

cea-03564253 , version 1 (10-02-2022)

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Micheal P Moloney, Nicolas Massoni, Hans-Conrad Zur Loye, Shani Egodawatte, Agnes Grandjean. Silver modified SBA-15 for Iodine entrapment. Journal of Inorganic and Organometallic Polymers and Materials, 2020, 30 (7), pp.2756-2763. ⟨10.1007/s10904-020-01447-3⟩. ⟨cea-03564253⟩
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